Cisco Unified Computing System Software contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system. Updates are available.
A vulnerability in the Intelligent Platform Management Interface (IPMI) implementation of Cisco Unified Computing System (Cisco UCS) Software could allow an unauthenticated, remote attacker to execute arbitrary code on a targeted system.
The vulnerability is due to improper handling of overly large values in requests processed by the affected software. An unauthenticated, remote attacker could exploit the vulnerability by sending malicious requests to the targeted system.
Cisco has confirmed the vulnerability in a security advisory and has released software updates.
The following Cisco UCS Software versions are affected:
All 1.0 versions
Versions prior to 1.1(1j)
Versions prior to 1.2(1b)
To exploit the vulnerability, an attacker must send UDP requests on port 623 to the targeted system. An attacker may require access to internal networks to send requests to a targeted system, increasing the difficulty of an attack.
Cisco indicates through the CVSS score that functional exploit code exists; however, the code is not known to be publicly available.
An unauthenticated, remote attacker could exploit this vulnerability to execute arbitrary code on a targeted system with elevated privileges, which could result in a complete system compromise.
The vulnerability is due to improper validation of input contained in requests processed by the IPMI implementation in Cisco UCS Software.
An unauthenticated, remote attacker could exploit this vulnerability by sending malicious requests containing overly large values to the IPMI service via UDP port 623. Processing the overly large values could cause a buffer overflow condition. The attacker could use the buffer overflow condition to execute arbitrary code on the targeted system with elevated privileges.
Administrators are advised to apply the appropriate updates.
Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.
Administrators are advised to monitor affected systems.
Cisco customers with active contracts can obtain updates through the Software Center at the following link: Cisco. Cisco customers without contracts can obtain upgrades by contacting the Cisco Technical Assistance Center at 1-800-553-2447 or 1-408-526-7209 or via e-mail at firstname.lastname@example.org.
The security vulnerability applies to the following combinations of products.
Cisco Unified Computing System (Managed)
1.0 Base, (2k) | 1.1 Base | 1.2 Base
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